Freezing of gauge symmetries in the heterotic string on T4

Article Physics, Particles & Fields

Compactness of brane moduli and the String Lamppost Principle in d > 6

Alek Bedroya et al.

Summary: In this study, we demonstrate the validity of the String Lamppost Principle for supersymmetric theories in d > 6, by using the compactness and connectedness of the moduli space of small instantons, as well as the classification of the associated Coulomb branch.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

Symmetry enhancements in 7d heterotic strings

Bernardo Fraiman et al.

Summary: Using a moduli space exploration algorithm, the study produces a complete list of maximally enhanced gauge groups realized in the heterotic string in 7d. This includes the usual Narain component and five other components with rank reduction via nontrivial holonomy triples. By employing lattice embedding techniques, an explicit match with the mechanism of singularity freezing in M-theory on K3 is found, with complete global data for each gauge group explicitly given.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Exploring the landscape of CHL strings on Td

Anamaria Font et al.

Summary: This study focuses on compactifications of the heterotic string on special T-d/Z(2) orbifolds, revealing properties of string models and gauge groups; systematic exploration of the moduli space using computer algorithms, identifying points where the U(1)(d+8) enhances to a non-Abelian gauge group; findings on group structures in specific dimensions.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Astronomy & Astrophysics

Gauge group topology of 8D Chaudhuri-Hockney-Lykken vacua

Mirjam Cvetic et al.

Summary: This passage discusses the compactification of the CHL string to eight dimensions using embeddings of root lattices into the momentum lattice Lambda(M). By this method, the global gauge group structure can be determined, including all U(1) factors. The topology of the gauge group is encoded in the dual of the momentum lattice, with nontrivial pi(1)(G) = Z corresponding to gauging a Z 1-form symmetry.

PHYSICAL REVIEW D (2021)

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Article Physics, Particles & Fields